Mortar-mixing machine



(No Model.) J. L. BOWLES.

MORTAR MXING MACHINE.

No. 515,4@3- Patented Feb. 27, 1994.

.N .ANNE

q` UNITED STATES l JOHN L. BOWLES,OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY DIRECTv PATENT OFFICE.

AND MESNE ASSIGNMENTS, TO JULIA H. RAE, OF MILFORD, DELAVARE.

MORTAlii-MIXING MACHINE.

SPEGIFISATIQN formingpart of Letters PatentNo. 515,463, dated February 27, 1894.

Application filed April 11, 1892.

.To csf/ZZ whom t may concern:

Be it known that I, JOHN L. BOWLES, of the city and county of Philadelphia and State of y Pennsylvania,have invented an Improvement in'Mortar-Mixing Machines, of which the following is a specification. v j

My invention relates tomachines for mixing mortar and other compositions of matter, and consists of certain improvements which .`=`.-,are fully setforth in the following specification and are shown inthe accompanying drawings -Tvhich form a part thereof. 4 j IIfhe object of my invention is to accomjplish the mixing together of the constituents 5 )f mortar, or other compositions of matter, by `,machinery in a thorough, quick and economical manner. i f It is Valso an object of my invention to accomplish the easy delivery of the mixed mortar Afrom the machine.

Incarrying out my invention I employ the apparatus illustrated in the accompanying drawings, in which- Figure l is a longitudinal view partly in section of my improved mixing machine. Fig. 2 is a front end elevation of the same. Fig. 3 is a plan view on a reduced scale of the front end of the machine. Fig. 4 is a view similar to Fig. l upon a reduced scale, showing a modified form of the machine, and Fig. is a side elevation of the front portion of the machine showing a modification of the devices for rocking the lime screen.

A is the mixing tank or vessel and may be of any desired construction. The mixing tank is provided with a suitable discharge outlet c. at one end and has, preferably, an inclined bottom c', inclining toward the outlet c.

.Iournaled longitudinally in the tank or vessel A is arot-ary mixing device carried upon the shaft B and rotated through the gearing C, c, or in any other suitable manner. I prefer to employ for this mixing device the construction shown in Fig. 1, in which the shaft B is provided with aspiral conveyer made in sections D, D', D2, Dirt/ith projecting arms or blades d carried by the shaft between the adjacent sections of the spiral conveyer. 5o Any desired number of arms or blades d may be employed and they may be bolted or cthsean Namaste. on modem erwise fastened to the shaft B. The shaft B lis preferably arranged at an incline corresponding with the inclination of the bottom a of the tanks so as to bring the edge of the spiral conveyer adjacent to the inclined bottom. The spiral conveyer acts to thoroughly mix the ingredients in the tank or vessel A and at the same time to feed them along to the outlet a and to discharge the mixture therefrom. The arms or blades d assist materially'in mixing together the constituents of the mortar or other composition; and their action may be materially assisted if desired by employing projecting arms or blades d carried upon the inner surface of the tank or vessel A and arranged adjacent to the rotary blades or arms d, as shown in dotted lines in Fig. l.

H is a cam wheel upon the end of the shaftl B provided with one or more cam projections h.

K is a screen for the lime, or one of the elements of the composition to be formed, hinged at one end upon a rod or bar O over the forward end of the tank A and having its free end resting upon and supported by a movable rod I which rests upon the cam H and .is guided in suitable guides i. When the cam H rotates the rod I will be raised and lowered by the action of the cam projections h and this will cause the screen K to be lifted up and down. This movement of the screen K will cause the slaked lime (which is in a thick liquid state) to pass more freely through interstices of the screen and will also prevent them from becoming clogged up. To most effectively accomplish this result I prefer to have the screen K descend or fall with a sudden jerk or jar and to produce this result the cam projection h may be made of a gradually increasing size terminating in a sharp odset or shoulder as shown. It will then act to slowly raise the screen K and then suddenly drop it with a jar.

While I have shown the cam H providedl with two cam projections It it is understood that one or any number may be employed according to the frequency with which it may be desired to operate the screen K. The screen K may be operated by the cam I-I through a lever instead of the rod I.

P is a second screen adapted to receive and screen the sand which is introduced into the vessel A. t The screen is arranged above the tank A and is-pivotally supported atitsinner end upon the'rodbr bar "O asshown 'at o,-'so as to be free to move laterally.

M is a bell crank lever kpivoted as atN-*to` the end ofthe tank and having one end connected with the free end of `the-screen Pand the other end provided with a projection l workingin an irregular 'or serpentine "cam groove L in the cam H. When the cam H rotates this cam groove L will impart arocking movement to the lever M thereby rocking the screen P laterally upon its pivot point. This rocking movement serves to sift orscreen the sand and prevent the clogging of the meshes of the screen. t

The slaked lime may be delivered to the limescreen K from a troughV lo.

In using the Iapparatus the lime and sand are supplied to their respective screens K and P lin the proper proportions and'pass thence into the vessel A where they 4are intimately mixed and worked together by the mixingdevices, which also serve to carry the mixed mortar ont'through the outlet a. This'out'let may be closed by a door or slide until it is desired to permit the mortar to pass out of the machine.

As it may be found desirable in startingthe ate in the reverse direction for the purpose of mixing up the material when the machine is started, the driving mechanism shown in Fig. l may be employed. In this construction the pinion or gear c is carried by a counter shaft C provided with a fast pulley c2 and t-wo loose pulleys c', c.

c6 is a second counter shaft carrying a band pulley driving "a straight belt c4 and a crossed belt c5, so that by throwing either the straight belt or crossed belt upon the fast pulley e2 of the shaft C the machine may be operated in either direction. WVhen the rotation of the shaft B is reversed the rod I by which the screen K is operated may be drawn out of the path of the cam H, so as not to obstruct the rotation of the shaft, or the cam may be thrown out of connection with the shaft B in any well known manner. If it be desired however during this reversed operation of the shaft B to operate the screen K, a second cam H may be employed corresponding with the cam H but having the direction of the cam projections h reversed and the rod I may be shifted so as to be brought in position to be operated by this second cam, and a pinj or other device may be employed to hold the rod This construcis arranged adjacent to the outlet end of the vessel 'andisada'pted toforcej'th'e mixed mortar outth'roughthe outleta.. Thisserewconveyer is mounted upon a vertical shaft E journ'a'led -in bearings e, e', the former of which is secured to the end of the vessel and vthe latter carried by the bracket e2.

F is a collarcarriedbythe shaft E 'which bears againstthe bearing e', and Vresists the upward pressure upon the screw.

' G is a'spur vwheel lcarried by the shaft, E', the teeth of which engage with the teeth of 'the'spur wheel G mounted on the shaft B and rotating therewith by this means'th'e screw E is rotated and acts to lforce the mixed mortar out of the 'outlet d. While I have shown this screw conveyer applied to the modified construction shown in Fig. 4, it is apparent that it may 'also be employed with` the constru`c tion shown in Fig. l if desired. Ordinarily however the action of the spiralconveyer D, D', dac., will be sufficient to force oi'it'the mixed mortar without the assistance of `the screw Vconveyer E.

it is apparent that they may be varied with'- out any departure fromthe invention.

'roo

What I claim as new, and 'desire to secure by' Letters Patent, is

l. The combination with the vesselvA,hav' ing an outlet a and provided with the shaft B havinga series of projecting blades and the spur wheel G', of the conveyer screw E within the vessel A adjacent to the outlet a, shaft E and spur wheel G, carried by the shaft E and meshing with the spurwheel G', whereby the conveyer screw E is operated to convey the mixed material out yof the vessel A through the outlet ct.

2. The `combination with the vessel A, shaft B and projecting arms or blades carried by the shaft, of the cam I-I having 'one 'or more cam projections h, the rod I and'screen K, 'as and for the purposes set forth.

3. The combination with the vessel A, shaft B and projecting arms or blades carried by the shaft, of the cams H and H having one or more cam projections h the projections of the cams H and H being relatively reversed, the rod I and screen K, as and for the 'purposes set forth.

4:. The combination with the vessel A, shaft B, and projecting arms or blades carried by the shaft, of the cam H, having the cam groove L, the lever M and sand screen P, as and for the' purpose setV forth.

5. In a machine for mixing mortar, die., the combination of a suitable vessel to contain the materials to be mixed, a rotary shaft j ournaled in the vessel provided with projecting portions to act npon the materialsga vertically rocking screen located overfthe vessel' and power transmitting connections between the shaft of the mixing devices for rocking' the screen vertically.

6. In a machine for mixing mortar, &c., the' combination of a suitable vessel to contain the materials to be mixed, a rotary shaftjonrnaled therein carrying projecting portions to nally vibratory screen located over the vessel,

a vertically rockingscreen also located over the vessel, and power transmitting connections between the rotary shaft and the vibratory screen and vertically rocking screen respectively to' vibrate the one laterally and rock the other vertically.

` 8. The combination with the mixing vessel A of the transverse bar O, the vertically rocking screen K hinged upon said transverse bar, and the laterally vibratory screen pivotally connected with said bar.

In testimony of which invention I have hereunto set my hand.

JOHN L. BOWLES.

Witnesses:

C. E. BAIRD, ERNEST HOWARD HUNTER.

Itis herebyeeroiied than the name of the assignee in Letters Patent No. 515,463, granted Febrnary 27, 1894, upon the application of John L. Bowles, of Philadelphia, Pennsylvania, for an improvement in Mortar-Mixing Machines, was erroneously Written and printed Julia H. Rae, Whereas said name should have been Writ-ten and printed Julio H. Rae; and that the said Letters Patent should be read with this eorreotion therein that; the same may conform to the corrected tiles and records of the case in the Patent Office. I l

Signed, eountersigned, and sealed this 27 th day of March, A. D. 1894.

JNO. M. REYNOLDS,

[SEAL] Assistant Secretary of the Interior. Gountersigned J ORN S. SEYMOUR,

Commissioner of Patents. 

